Computer glitch? That's an anomaly. Things firing/smoking when they shouldn't? That's an anomaly too. Pressure reading slightly out of predicted range? Also a

Computer glitch? That's an anomaly. Things firing/smoking when they shouldn't? That's an anomaly too. Pressure reading slightly out of predicted range? Also anomaly. Everything went kaboom? That is also an anomaly, as long as that wasn't the plan. Basically everything where expectation and reality do not meet.